Mechanical advertising device



Nov. 30, 1937. R F ANDLER 2,100,690

MECHANICAL ADVERTISING DEVICE Filed Dec. 29, 1936 INVENTOR.

. W 3-. QMMW p glQ/WJJ ATTORNEY.

Patented Nov. 30, 1937 UNITED STATES PATENT OFFIE Robert F. Andler,

Rutherford, N. J., assignor to Electrol Incorporated, Clifton, N. J., acorporation of Delaware Application December 29, 1936, Serial No.118,082

3 Claims.

My invention relates to that class of devices which are shown in UnitedStates Patent No. 1,816,521, issued to J. P. Feeley, July 28, 1931. Asshown in that patent the device is used to illustrate the manner oftravel of the flame of an oil burner it being illustrated by supportingan air filled balloon, adjacent the end of a cylinder of the gun typeofoil burner with a rapidly rotating current of air projected from the endof the gun, due to the fact that the air enters the cylinder from ablower fan having an involute curve.

My invention has for its object to provide an apparatus which willaccomplish the result without employing an involute curve and which willoperate to hold the balloon suspended a. short distance in front of thenozzle.

My means of accomplishing the foregoing objects may be more fullycomprehended by having reference to the accompanying drawing, which ishereunto annexed and is a part of this specification in which:

Fig. 1 is a side elevation of my improved construction, a portion of thenozzle being shown in section so as to illustrate the manner in whichthe air is caused to circulate in a spiral, and the means for winding itinto a vortex beyond the end of the nozzle so as to hold the balloon inthe desired position;

Fig. 2 is a front elevation;

Fig. 3 is a cross section taken on the line 33 in Fig. l; and

Fig. 4 is an enlarged detailed end view of the disc.

As shown in the drawing, an electric motor I is suitably connected to astandard blower fan 2, the discharge 3 of which carries the air througha pipe 4 which is suitably connected to a cylindrical sleeve 5. A tube 6which simulates the tube used to convey the fuel is mounted in an axialcenter of the sleeve 5. On this tube is mounted a disc 1 which isprovided with peripheral orifices B the walls of which are inclined soas to cause the air to assume a gyrating movement inside of thecylindrical sleeve 5 after it passes the disc 1, its travel beingindicated by directional arrows.

The end 9 of the cylindrical sleeve 5 is formed by an inwardly extendingtruncated conoidal portion, a smaller truncated conoidal portion In ismounted inside of the truncated conoidal portion 9, the outer walls ofwhich are spaced therefrom so as to provide an annular conoidal spacefor the travel of the air.

The result of tlL's construction is that when the electric motor isrevolved, it will cause the blower fan 2 to discharge an air stream, asindicated by the arrows, into the cylindrical sleeve 5, where it willimpinge against the disc 1 and escape through the peripheral orifices 8which cause it to assume the gyrating motion indicated by the arrows inFig. 1.

This air escapes through the annular conoidal space intermediate thecones 9 and I!) which operates to wind it up so that it will produce avortex when it leaves the nozzle. This results in producing a partialvacuum at the center of the vortex which serves to draw the ballooninwardly at that point.

The balloon is constructed in the usual manner of rubber, and is filledwith air. The action of the vortex in drawing the balloon inwardly isresisted by the outwardly flowing currents of air which, impinging uponthe surface of the balloon repel it with the result that it is caused torotate upon its axis and is held suspended adjacent the end of thecylinder sleeve 5 as clearly seen in Fig. 1 of the drawing.

Having described my invention, what I regard as new and desire to secureby Letters Patent is:

1. An advertising device designed to hold an air filled balloon adjacentthe end of a cylindrical sleeve, 2, source of air supply, means todirect said air into said cylindrical sleeve, a disc mounted in saidsleeve having a plurality of peripheral orifices inclined to cause theair currents to gyrate in said sleeve on the side of the disc away fromthe entrance of the air current, the end of said cylindrical sleevebeing formed by a truncated conoidal portion, a smaller truncatedconoidal cone mounted inside of the end of said sleeve, forming anannular conoidal space intermediate the two, whereby the air escapingtherefrom will be wound up into a vortex which operates to support theair filled balloon adjacent the end of said cylindrical sleeve.

2. An advertising device designed to hold an air filled balloon adjacentthe end of a cylindrical sleeve, a source of air supply, means to directsaid air into said cylindrical sleeve, means mount- 4 hold an air filledballoon adjacent the end of a cylindrical sleeve, a source of airsupply, means to direct said air into said cylindrical sleeve, aplurality of inclined walls mounted in said sleeve adjacent the innerwall of said sleeve to cause the air currents to gyrate in said sleeveon the side of the disc away from the entrance of the air current, theend of said cylindrical sleeve being

